A heating engineer in work gloves, seen from behind, adjusting the controls of an open wall-mounted boiler.

BS 7593 Water Testing

What the BS 7593 standard means for your heating system, and why we test your system water on every boiler service and every new installation.

BS 7593:2019

What It Means for Your Heating System

The BS 7593:2019 standard is the official industry guideline for how central heating systems should be cleaned, protected and maintained. It applies to all boilers, gas or oil, and all wet central heating systems, whether brand new or already installed in your home.

At Billericay Heating, we follow this standard on every boiler service and every new installation because it ensures your system runs safely, efficiently and reliably for years to come.

Gas Safe

Registered engineers

OFTEC

Registered for oil

Free

No-obligation quotes

  • Gas and oil boilers
  • New and existing wet central heating systems
  • Part of every boiler service and installation
  • Water test PASS certificate
Illustration of a heating system water test result shown on a phone.
Why It Matters

Why Has the Standard Changed?

Modern boilers are more efficient than ever, but they're also more sensitive to poor water quality.

Even small amounts of sludge, rust or debris can cause

  • Cold spots on radiators

  • Noisy pipes or kettling

  • Reduced efficiency and higher bills

  • Premature boiler breakdowns

  • Voided manufacturer warranties

The updated BS 7593 standard recognises this and now requires regular water testing and ongoing system protection, not just a one-off clean when the boiler is installed.

How BS 7593 protects your home

Following this standard means your heating system benefits from:

Better efficiency
Your boiler doesn't have to work as hard.
Lower energy bills
Clean water means smoother heat transfer.
Longer boiler lifespan
Reduced wear and tear.
Fewer breakdowns
Problems are caught early.
Valid warranties
Most manufacturers now require water testing.

It's a small step that makes a big difference to your comfort and safety.

Your Water Test

What We Check During Your BS 7593 Water Test

During your boiler service, our engineers carry out a quick but essential water quality test to make sure your system is healthy and protected.

If your system fails, we'll advise on the remedial work it needs, such as an ADEY MagnaCleanse system flush, then retest and certify it once it meets the standard.

About MagnaCleanse system cleaning
  1. Inhibitor levels

    We check the level of inhibitor, the chemical that prevents corrosion.

  2. Sludge, debris and corrosion

    We test for sludge, debris or corrosion particles.

  3. Cleaning or flushing

    We assess whether the system needs cleaning or flushing.

  4. System filters

    We make sure filters are working correctly.

  5. Warranty requirements

    We confirm your system meets manufacturer warranty requirements.

This test helps us spot issues early, long before they turn into expensive repairs.

Our Commitment

Billericay Heating's Commitment to BS 7593

We take system health seriously. We're here to keep your heating running smoothly, safely and efficiently.

  • A BS 7593-compliant water test on every service we carry out

  • Honest advice based on the results

  • Clear recommendations if your system needs treatment

  • No unnecessary work, just what's genuinely needed to protect your home

  • Local, trusted, Gas Safe engineers

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Heating & Plumbing FAQs

Frequently Asked Questions

Answers to common questions about our heating and plumbing work.

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Related Services

Gloved hands working on the pump inside a gas boiler with its front casing removed.

Boiler Servicing

A full annual inspection that keeps your boiler safe and efficient, with a BS 7593 water test and Gas Safe certificate.

Illustration of an engineer agitating a radiator to loosen sludge during a MagnaCleanse flush.

Powerflush & MagnaCleanse

The modern, safer alternative to power flushing: a low-pressure ADEY MagnaCleanse system flush that cleans each radiator individually.

Illustration of an engineer fitting an ADEY MagnaClean magnetic system filter under a boiler.

Boiler System Filters

Professionally installed magnetic system filters that catch sludge before it reaches your boiler.

Free, No-Obligation Quotes

Book Your BS 7593 Water Test & Boiler Service

Keeping your heating system healthy has never been more important. Book your annual service with Billericay Heating and enjoy complete peace of mind.